LM6125/LM6225/LM6325

High Speed Buffer

General Description

The LM6125 family of high speed unity gain buffers slew at

800 V/µs and have a small signal bandwidth of 50 MHz while

driving a 50

do not oscillate while driving large capacitive loads. The

LM6125 contains unique features not found in power buffers;

these include current limit, thermal shutdown, electronic

shutdown, and an error flag that warns of fault conditions.

grated PNP) process which provides fast PNP transistors

that are true complements to the already fast NPN devices.

This advanced junction-isolated process delivers high speed

performance without the need for complex and expensive di-

electric isolation.

Features

n High slew rate:

800 V/µs

n High output current:

n Stable with large capacitive loads

n Current and thermal limiting

n Electronic shutdown

n Fully specified to drive 50

Ω lines

Applications

n Line Driving

n Radar

n Sonar

Simplified Schematic and Block Diagram

DS009222-1

DS009222-2

Numbers in () are for 14–pin N DIP.

December 1994

© 1999 National Semiconductor Corporation

DS009222

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